I was given this tracking number but it is not showing up. Was I given a fake number?

I have been expecting my package from China, using China Post Registered mail no. RC312253776CN. Its been shipped on March 16, 2016. Could you please check whether this tracking number is real and legit, provided by seller. Because normally to Namibia only takes at less than 2 months. Most my package I ordered online were arrived already ( even the one I ordered later on than this seller). Kindly reply me if its a fake tracking, I have used all apps and all tracking website, including yours, and it doesn't show anything. Many thanks!

Can you track this number for me ? LL786347797CN 9/21 is when the seller created it. Is it legit? I think I am being scammed. I bought a utility cart on 8/25 for $54.18 that should weigh about 30 to 40 pounds they sent me a cheep belt. Finally after days of disputing it with them they said they will reship it . This tracking # doesn't seem to be in the system . Seller sent me a tracking link but that site looks fake to me. I have tracked it on 9 different sites all say not found and unknown . Except the fake site they told me to track it on Thanks for your help